Teeth sensitivity is a dental problem that occurs when you eat or drink very cold or hot foods and drinks. This causes a sharp electric sensation as if something stings in the teeth. Some people have reaction to foods that are sweet or sour. The problem can occur when you apply pressure on the teeth. The main causes of sensitive teeth are dental problems and trauma. The wearing of enamel of teeth is responsible for sensitive teeth. The affected person feels pain in the teeth. If you have sensitive teeth, you should not eat acidic foods like fruit juice and pickles. 4 easy home remedies for sensitive teeth are as follows.